In this case, you can run the netstat-nlutp command to check whether the dhcp service has enabled netstat and check the connected service port (ESTABLISHED) netstat-a to view all service ports (LISTEN, ESTABLISHED) sudonetstat-ap: View all service ports and Display corresponding ports...
At this time, you can run the "netstat-nlutp" command to check whether the dhcp service has enabled netstat and check the connected service port (ESTABLISHED) netstat-a to view all service ports (LISTEN, ESTABLISHED) sudo netstat-ap: View all service ports and display the corresponding service program name. if you want to view TCP or UDP port usage, use netstat-anp. if some processes are invisible, if only "-" is displayed "-", try sudo netstat-anp netstat for details-a or-all to display valid connections established by socket-n in all connections-o display timer-p-programs to display programs in use-t display the connection status of tcp transmission-u display the connection status of udp transmission-l display the socket author yingbin920 of the monitored server
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